EP0459271A2 - Procédé pour la fabrication en continu ou séquentielle de plaques et/ou d'éléments à partir de matériaux à prise hydraulique renforcés de fibres et plaques et/ou éléments ainsi obtenus - Google Patents

Procédé pour la fabrication en continu ou séquentielle de plaques et/ou d'éléments à partir de matériaux à prise hydraulique renforcés de fibres et plaques et/ou éléments ainsi obtenus Download PDF

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Publication number
EP0459271A2
EP0459271A2 EP91108182A EP91108182A EP0459271A2 EP 0459271 A2 EP0459271 A2 EP 0459271A2 EP 91108182 A EP91108182 A EP 91108182A EP 91108182 A EP91108182 A EP 91108182A EP 0459271 A2 EP0459271 A2 EP 0459271A2
Authority
EP
European Patent Office
Prior art keywords
plate
fiber
plates
hydraulically setting
halves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP91108182A
Other languages
German (de)
English (en)
Other versions
EP0459271A3 (en
Inventor
Ulrich Dr. Pachow
Karl-Ernst Dipl.-Ing. Kröger
Rainer Dipl.-Ing. Mahrla
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Faserbetonwerk Kolbermoor & Cokg GmbH
Original Assignee
Faserbetonwerk Kolbermoor & Cokg GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Faserbetonwerk Kolbermoor & Cokg GmbH filed Critical Faserbetonwerk Kolbermoor & Cokg GmbH
Publication of EP0459271A2 publication Critical patent/EP0459271A2/fr
Publication of EP0459271A3 publication Critical patent/EP0459271A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0015—Machines or methods for applying the material to surfaces to form a permanent layer thereon on multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • B28B1/522—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement for producing multi-layered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • B28B1/526—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement by delivering the materials on a conveyor of the endless-belt type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/0006—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects the reinforcement consisting of aligned, non-metal reinforcing elements

Definitions

  • the invention relates to a method for the continuous or clocked production of plates and / or moldings from fiber-reinforced hydraulically setting compositions according to the preamble of claim 1 and associated plates and / or moldings according to the preamble of claim 14.
  • a hydraulically setting mass is applied in a predetermined thickness on a base lying on a continuously moving belt and moving with the belt. Then, in a metered amount, fiber chips coming from a cutting device are sprinkled onto the surface of the continuously moving pre-fixed mass, in order to be pressed into the matrix while moving with a tool that spans the entire working width. The mass is compressed at the same time.
  • the fiber chips distributed over the mass to be hardened and coming from the cutting unit can be sprinkled on the pre-fixed mass in several successive phases and pressed into the mass to be hardened in various subsequent work steps with a corresponding multiple-strip tool.
  • a new layer of hydraulically setting masses can then be applied and, in one or at least one further step, fiber chips coming from the wood chip plant are sprinkled on and pressed into different layer thicknesses using the multi-strip tool.
  • the above-mentioned manufacturing process can be carried out continuously or in directly successive work steps.
  • the improvement according to the invention can be achieved in a simple and extremely economical manner compared to the prior art in that two correspondingly prefabricated plates or moldings are produced from fiber-reinforced hydraulically setting compositions and are placed on top of one another with their upper sides facing one another. Since the two individual halves are prefabricated identically, the overall structure is ideally symmetrical. The symmetrical basic structure also ensures a symmetrical, even water-cement density distribution, which also counteracts deformation. Above all, however, it is ensured by the continuous fibers or rovings inserted in the lower and upper half of the plate that these come to lie exactly in the area in which, above all, the tensile forces are to be absorbed and absorbed.
  • the fiber chips are distributed in a metered amount in each case in the upper and lower plate area from the middle plane of symmetry rather to the outer surface, in which they are needed above all for the absorption of force and / or support.
  • This also results in a higher proportion of cement paste in the middle, which means that the two plate halves can be connected even better.
  • the method according to the invention allows plates such as moldings to be produced from fiber-reinforced hydraulically setting compositions, it not only being possible to produce plates or moldings with a high symmetrical structure and largely uniformity, but above all also a clean, smooth surface on the top and bottom of the plate and if desired, a structured or profiled plate surface can also be achieved. This is because any profiling can be carried out according to the carrier film used or using profiled documents.
  • FIG. 1 shows a schematic cross-sectional representation of a process sequence when two plate halves are joined, to which reference is made below.
  • a moving conveyor belt 1 is shown, with which a second 3 ′′ is applied in a desired width to an existing plate 3 ′.
  • the plates 3 'and 3' ' can be made, for example, by extruding the hydraulically setting mass through an extruder, the opening of which corresponds to the thickness and width of the plate to be produced.
  • a cutting unit is arranged above the conveyor belt, which continuously ejects fiber chips, usually glass fiber chips, in the desired length via a chute, from which the fiber chips are then disrupted and scattered in an oriented manner onto the surface of the mass. Since the mass is continuously moved under the pulp rule, the fiber chips coming from the chute are controllably distributed evenly on the surface of the mass.
  • these fiber chips are pressed into the hydraulically setting mass to a desired depth, for example with a plate that is approximately 3 mm to 3.5 mm thick and approximately 0.5 mm from the underside .
  • the process explained above can be repeated, for example, the chips being distributed again over the hydraulically setting mass being pressed into the hydraulically setting mass again via the multiple-bar comb, but preferably to a different depth, for example up to 1. 5 mm distance from the underside resting on the moving belt.
  • continuous fibers so-called rovings
  • the continuous fibers can be impregnated in a manner known per se.
  • a further layer of hydraulically setting compound 11 can then be applied, as a result of which the lower plate half 3 ', which results in a schematic cross-sectional representation, is ultimately formed, in which the lower first and an overlying second layer with fiber chips 5 and another one above it are schematically formed Layer with continuous fiber or rovings 7 in the hydraulically setting mass 11 are shown. This is followed by no or at least one layer of pulp in z. B. about 4.5 mm from the conveyor belt level.
  • two plate halves are now placed one on top of the other with their upward-facing layers, for example by using a shooting belt 13 shown schematically in FIG simultaneous forward movement is carried out in such a way that the still uncured mass on top, forming the upper plate half 3 ′′, is turned by 180 ° and placed on the lower plate half 3 ′.
  • connection level 17 As a result, a higher proportion of cement paste is also available in the connection level 17 in order to optimally connect the two plate halves 3 'and 3' 'to one another.
  • the manufacturing method explained above can be carried out step by step or in a modified form continuously, whereby either first cut plate halves cut to length and then placed on top of each other or largely continuous strands of plate halves are placed on top of one another and then cut into plates of predetermined length.
  • the final, thus prefabricated, sandwich-like panels 3 are then stacked on the formwork panel in the trolley until final hardening or brought into a corresponding shaping device, for example for the production of corrugated panels, for deformation.
  • the above-described method is generally carried out in such a way that a base which is moved with it, for example in the form of a film, a glass fleece or a plastic-coated paper, is always provided on the illustrated conveyor belt.
  • This underlay has a kind of formwork character and can later be removed from the board surface without any impairment and without any residues, which means that a completely uniform, smooth board surface can be produced, which has neither rough spots nor cracks.
  • a film provided with structural elements for example, predetermined structural elements or even when using a colored film, pre-coloring of the outer sides of the plates could also be produced.
  • the plate halves are placed on top of one another with their respectively rough and non-smooth surface on top, it is thus ensured that the final sandwich-like plate has the completely smooth, crack-free and residue-free surface texture mentioned above and below , since both outer sides are now covered by the mentioned pad, which can be removed later.
  • the plate which preferably consists of a film Underlay is provided, there is also an optimal post-treatment, which ensures a more uniform curing, which significantly improves the quality of the product.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
EP19910108182 1990-05-31 1991-05-21 Process for the continuous or sequenced manufacture of plates and/or products from water setting, fibre reinforced materials and obtained plates and/or products Withdrawn EP0459271A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4017604 1990-05-31
DE19904017604 DE4017604A1 (de) 1990-05-31 1990-05-31 Verfahren zur kontinuierlichen oder getakteten herstellung von platten und/oder formkoerpern aus faserbewehrten hydraulisch abbindenden massen sowie zugehoerige platten und/oder formkoerper

Publications (2)

Publication Number Publication Date
EP0459271A2 true EP0459271A2 (fr) 1991-12-04
EP0459271A3 EP0459271A3 (en) 1992-01-15

Family

ID=6407586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910108182 Withdrawn EP0459271A3 (en) 1990-05-31 1991-05-21 Process for the continuous or sequenced manufacture of plates and/or products from water setting, fibre reinforced materials and obtained plates and/or products

Country Status (2)

Country Link
EP (1) EP0459271A3 (fr)
DE (1) DE4017604A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993003899A1 (fr) * 1991-08-23 1993-03-04 Babcock-Bsh Aktiengesellschaft Procede et dispositif de fabrication de carreaux de platre a couches multiples renforces par des fibres
WO2008057376A2 (fr) 2006-11-01 2008-05-15 United States Gypsum Company Procédé multicouche et appareil pour la production de panneaux de structure en ciment renforcés par des fibres, hautement résistants, à teneur en fibres améliorée

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE272557C (fr) *
US2422345A (en) * 1940-08-02 1947-06-17 Carey Philip Mfg Co Manufacture of hydraulic cement products
DE1159329B (de) * 1958-06-09 1963-12-12 Camillo Pasquale Verfahren und Vorrichtung zum kontinuierlichen Herstellen von Asbestzementplatten
US3454688A (en) * 1965-06-15 1969-07-08 Ici Ltd Process for the production of formed gypsum castings
DE2154417A1 (de) * 1971-11-02 1973-05-03 Ferma Verfahren zum herstellen von formkoerpern insbesondere von platten aus gips, und nach diesem verfahren hergestellte formkoerper
DE2605779A1 (de) * 1976-02-13 1977-08-18 Hans Guenter Moeller Verfahren und vorrichtung zum herstellen von sandwichplatten
DE2613976C3 (de) * 1976-04-01 1994-04-07 Knauf Westdeutsche Gips Mehrschichtige Platte und Verfahren zur Herstellung derselben
AU528009B2 (en) * 1978-11-21 1983-03-31 Stamicarbon B.V. Sheet of fibre-reinforced hydraulically bindable material
DE3431143A1 (de) * 1984-08-24 1986-03-06 Heidelberger Zement Ag, 6900 Heidelberg Verfahren zur kontinuierlichen herstellung von platten aus faserbeton

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993003899A1 (fr) * 1991-08-23 1993-03-04 Babcock-Bsh Aktiengesellschaft Procede et dispositif de fabrication de carreaux de platre a couches multiples renforces par des fibres
WO2008057376A2 (fr) 2006-11-01 2008-05-15 United States Gypsum Company Procédé multicouche et appareil pour la production de panneaux de structure en ciment renforcés par des fibres, hautement résistants, à teneur en fibres améliorée
EP2150357A4 (fr) * 2006-11-01 2013-02-20 United States Gypsum Co Procédé multicouche et appareil pour la production de panneaux de structure en ciment renforcés par des fibres, hautement résistants, à teneur en fibres améliorée

Also Published As

Publication number Publication date
DE4017604A1 (de) 1991-12-05
EP0459271A3 (en) 1992-01-15

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